First version of new merge algorithm (not enabled yet)

Source/platform/graphics/paint/SubtreeDisplayItem.cpp

Index: Source/platform/graphics/paint/SubtreeDisplayItem.cpp
diff --git a/Source/platform/scheduler/ClosureRunnerTask.cpp b/Source/platform/graphics/paint/SubtreeDisplayItem.cpp
similarity index 56%
copy from Source/platform/scheduler/ClosureRunnerTask.cpp
copy to Source/platform/graphics/paint/SubtreeDisplayItem.cpp
index 5ff25b5953e1566fa242cb663a24c7fe0d30e06c..bf1f849a1d26cdf8d53b1864aee7d937b34c3e5a 100644
--- a/Source/platform/scheduler/ClosureRunnerTask.cpp
+++ b/Source/platform/graphics/paint/SubtreeDisplayItem.cpp
@@ -3,13 +3,6 @@
 // found in the LICENSE file.
 
 #include "config.h"
-#include "platform/scheduler/ClosureRunnerTask.h"
+#include "platform/graphics/paint/SubtreeDisplayItem.h"
 
-namespace blink {
-
-void ClosureRunnerTask::run()
-{
-    (*m_closure)();
-}
-
-} // namespace blink
+// Intentionally empty. Required when the create() functions are not inlined.